= Problem: Bad control of what and how many e-mails have being sent to users.= Solution: A simple table that log a summary of each e-mail had been sent. A daily routine avoid this table grows uncontrolled and use the data to generate statistics.

= Problem: Important e-mails are deleted from the database when a user change his e-mail.= Solution: A simple table that store all e-mails independently.

= Usually, good systems do not send attachments by e-mail because this a open door to attacks.